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NSR database version of May 19, 2024.

Search: Author = N.Dubray

Found 24 matches.

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2020AN12      Phys.Rev. C 102, 014319 (2020)

B.Andel, A.N.Andreyev, S.Antalic, M.Al Monthery, A.Barzakh, M.L.Bissell, K.Chrysalidis, T.E.Cocolios, J.G.Cubiss, T.Day Goodacre, N.Dubray, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, L.P.Gaffney, R.F.Garcia Ruiz, S.Goriely, C.Granados, R.D.Harding, R.Heinke, S.Hilaire, M.Huyse, J.-F.Lemaitre, K.M.Lynch, B.A.Marsh, P.Molkanov, P.Mosat, S.Peru, C.Raison, S.Rothe, C.Seiffert, M.D.Seliverstov, S.Sels, D.Studer, J.Sundberg, P.Van Duppen

β-delayed fission of isomers in 188Bi

RADIOACTIVITY 188,188m,190,190mBi(α), (β+F)[from U(p, X), E=1.4 GeV using RILIS and HRS separators at ISOLDE-CERN facility]; measured Eα, Iα, fission fragment energies, (fission fragment)(fission fragment)-coin; deduced partial T1/2 of β+-delayed fission (βDF) mode, βDF probabilities. 188Pb; deduced mean total kinetic energy and fission fragment mass distribution after 188Bi β-decay of high-spin isomer of 188Bi, limits of βDF partial half-lives of the two activities in 190Bi. Comparison of partial βDF partial half-lives with calculations based on HFB and QRPA, and those of fragment mass distribution with SPY and FRLDM-based calculations. Systematics of βDF partial T1/2 in neutron deficient nuclei in Tl, Bi, At, Fr, Np, Am, Bk, Es and Md isotopes. 182,184,186,188,190,192Pb; calculated theoretical pre-neutron-emission fission fragment mass distributions (FFMDs) with the SPY model using the D1M-Gogny interaction, and with the FRLDM model.

doi: 10.1103/PhysRevC.102.014319
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2020BE28      J.Phys.(London) G47, 113002 (2020)

M.Bender, R.Bernard, G.Bertsch, S.Chiba, J.Dobaczewski, N.Dubray, S.A.Giuliani, K.Hagino, D.Lacroix, Z.Li, P.Magierski, J.Maruhn, W.Nazarewicz, J.Pei, S.Peru, N.Pillet, J.Randrup, D.Regnier, P.G.Reinhard, L.M.Robledo, W.Ryssens, J.Sadhukhan, G.Scamps, N.Schunck, C.Simenel, J.Skalski, I.Stetcu, P.Stevenson, S.Umar, M.Verriere, D.Vretenar, M.Warda, S.Aberg

Future of nuclear fission theory

doi: 10.1088/1361-6471/abab4f
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2019RE01      Phys.Rev. C 99, 024611 (2019)

D.Regnier, N.Dubray, N.Schunck

From asymmetric to symmetric fission in the fermium isotopes within the time-dependent generator-coordinate-method formalism

RADIOACTIVITY 254,256,258Fm(SF); calculated potential energy surfaces, primary fragment mass and charge yields for spontaneous fission (SF) and neutron-induced fission, total energy as a function of the heavy fragment charge. Time-dependent generator-coordinate-method with the Gaussian overlap approximation (TDGCM+GOA) with D1S, D1N, and D1M parametrizations of the Gogny effective interaction. Comparison with other theoretical approaches, and with experimental data. Relevance to r-process nucleosynthesis and the decay of superheavy elements.

doi: 10.1103/PhysRevC.99.024611
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2018LE11      Phys.Rev. C 98, 024623 (2018)

J.-F.Lemaitre, S.Goriely, S.Hilaire, N.Dubray

Microscopic description of the fission path with the Gogny interaction

NUCLEAR STRUCTURE 260Fm, 286Sg; calculated potential energy surfaces (PES) and least-energy path (LEP) in (Q30, Q20) plane using Dijkstra's minimization algorithm. 226Th, 236,238U, 240Pu; calculated LEP as function of Q20 with different corrections in the ATDHF and GCM frameworks. 230,232Th, 232,234,236,238U, 238,240,242,244Pu, 242,244,246,248Cm; calculated primary and secondary fission barrier heights in the ADTHF and GCM frameworks using Gogny D1M interaction, and compared with empirical values. Z=90-110, N=110-250; calculated heights of primary fission barriers for even-even nuclei using Gogny D1M interaction, and compared with values from HFB14 calculations.

RADIOACTIVITY 232,234,236,238U, 240Pu, 248Cm, 250,252,254,256Fm, 252,254,256No, 256,258,260Rf, 258,260,262Sg, 264Hs(SF); calculated spontaneous fission half-lives as a function of the fissibility parameter with either the ATDHF or the GCM correction. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.024623
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2016HI08      Eur.Phys.J. A 52, 336 (2016)

S.Hilaire, S.Goriely, S.Peru, N.Dubray, M.Dupuis, E.Bauge

Nuclear reaction inputs based on effective interactions

NUCLEAR STRUCTURE A=20-250; calculated s-wave neutron resonance mean spacing using ab initio calculations with BSk9 Skyrme interaction. 240Pu; calculated potential energy surface, quadrupole moment using Gogny-type interaction.

NUCLEAR REACTIONS 235U(n, F), E=0.02-12 MeV; calculated σ using ab initio Skyrme interactions. 40Ca, 48Cr, 89Y, 165Ho, 181Ta, 208Pb, 233Th, 238U, 242Pu(n, x), E=0.01-200 MeV; calculated total reaction σ using JLM approach with D1M nuclear matter densities. Compared with available data.

doi: 10.1140/epja/i2016-16336-2
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2016RE10      Phys.Rev. C 93, 054611 (2016)

D.Regnier, N.Dubray, N.Schunck, M.Verriere

Fission fragment charge and mass distributions in 239Pu (n, f) in the adiabatic nuclear energy density functional theory

NUCLEAR REACTIONS 239Pu(n, F), E=low; calculated pre-neutron emission charge and mass distributions of the fission fragments. Potential energy surfaces. Nuclear energy density functional (EDF) method, with the time-dependent generator coordinate method (TDGCM) and Gaussian overlap approximation (GOA). Comparison with available experimental data.

doi: 10.1103/PhysRevC.93.054611
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2013GO17      Phys.Rev.Lett. 111, 242502 (2013)

S.Goriely, J.-L.Sida, J.-F.Lemaitre, S.Panebianco, N.Dubray, S.Hilaire, A.Bauswein, H.-T.Janka

New Fission Fragment Distributions and r-Process Origin of the Rare-Earth Elements

doi: 10.1103/PhysRevLett.111.242502
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2012BA38      Eur.Phys.J. A 48, 113 (2012)

E.Bauge, G.Belier, J.Cartier, A.Chatillon, J.M.Daugas, J.P.Delaroche, P.Dossantos-Uzarralde, H.Duarte, N.Dubray, M.Ducauze-Philippe, L.Gaudefroy, G.Gosselin, T.Granier, S.Hilaire, H.-T.P.Chau, J.M.Laborie, B.Laurent, X.Ledoux, C.Le Luel, V.Meot, P.Morel, B.Morillon, O.Roig, P.Romain, J.Taieb, C.Varignon, N.Authier, P.Casoli, B.Richard

Coherent investigation of nuclear data at CEA DAM: Theoretical models, experiments and evaluated data

NUCLEAR REACTIONS 175,176Lu(n, γ), E≈0.02-100 eV; measured Eγ, Iγ, γγ-coin; deduced σ, resonances. Compared with ENDF/B-VII.0 with SAMMY7. 176Lu(n, γ), E=80-40000 eV; measured Eγ, Iγ, γγ-coin; deduced σ. Compared with ENDF/B-VII.0 and other data. 174Lu(3He, p), E=60-600 keV; measured prompt and delayed Eγ, Iγ, γγ-coin; deduced γ ray emission probability vs energy; calculated γ ray emission probability using TALYS.177mLu(n, γ), (n, X), E=thermal; measured measured Eγ, Iγ, γγ-coin; deduced σ, resonance parameters. 239Pu(n, F), E not given; measured prompt En, In using FIGARO. Compared with other data, ENDF/B-VII and BRC evaluation. 2H(n, 2n), E=4-26 MeV; measured En, In using CARMEN; deduced σ. Compared with other data, ENDF/B-VII, Ac18, NJOY. 234U(n, F), E=0.15-1.2 MeV;236U(n, F), E=0.75-2.0 MeV;238U(n, F), E=0.01-1 MeV; calculated σ using TALYS. Compared with data. 238U(n, F), E=2, 2.9, 6.01, 7.02, 8.01, 8.94, 14.3, 14.7 MeV; calculated prompt fission σ(n, En). Compared with data. 239Pu(n, γ), (n, F), (n, n'), (n, 2n), (n, 3n), E=0.001-20 MeV; calculated σ, uncertainties, correlation matrix using BFMC.

doi: 10.1140/epja/i2012-12113-7
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2012PA40      Phys.Rev. C 86, 064601 (2012)

S.Panebianco, J.-L.Sida, H.Goutte, J.-F.Lemaitre, N.Dubray, S.Hilaire

Role of deformed shell effects on the mass asymmetry in nuclear fission of mercury isotopes

RADIOACTIVITY 180,198Hg, 235U(SF); calculated minimum absolute available energy at scission for all possible fragmentations, symmetric and asymmetric fission. Microscopic scission-point model.

doi: 10.1103/PhysRevC.86.064601
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2009DU08      Int.J.Mod.Phys. E18, 782 (2009)

N.Dubray

Fission fragment properties from a microscopic approach with the Gogny force

RADIOACTIVITY 226Th, 256,258,260Fm(SF); calculated fragment properties and neutron multiplicity using Gogny force. Compared to data.

doi: 10.1142/S0218301309012872
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2008DU01      Phys.Rev. C 77, 014310 (2008)

N.Dubray, H.Goutte, J.-P.Delaroche

Structure properties of 226Th and 256, 258, 260Fm fission fragments: Mean-field analysis with the Gogny force

RADIOACTIVITY 226Th, 256,258,260Fm(SF); calculated potential energy surfaces, scission energies, scission configurations, scission lines, binding energies, neutron multiplicities, kinetic energies of fission fragments. 112Ru, 150Ce; calculated quadrupole moments, potential energy curves.

doi: 10.1103/PhysRevC.77.014310
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2008DU06      Int.J.Mod.Phys. E17, 72 (2008)

N.Dubray, H.Goutte, J.-F.Berger, J.-P.Delaroche

Fission fragment properties at scission with the Gogny force

RADIOACTIVITY 112Ru, 150Ce, 226Th, 256,258,260Fm(SF); calculated potential energy surfaces, nascent fission fragment structure properties, and fragment yields using the HFB approach.

doi: 10.1142/S0218301308009562
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2008RO02      Phys.Rev. C 77, 014308 (2008)

J.Robin, Th.Byrski, G.Duchene, F.A.Beck, D.Curien, N.Dubray, J.Dudek, A.Gozdz, A.Odahara, N.Schunck, N.Adimi, D.E.Appelbe, P.Bednarczyk, A.Bracco, B.Cederwall, S.Courtin, D.M.Cullen, O.Dorvaux, S.Ertuck, G.de France, B.Gall, P.Joshi, S.L.King, A.Korichi, K.Lagergren, G.Lo Bianco, S.Leoni, A.Lopez-Martens, S.Lunardi, B.Million, A.Nourredine, E.Pachoud, E.S.Paul, C.Petrache, I.Piqueras, N.Redon, A.Saltarelli, J.Simpson, O.Stezowski, R.Venturelli, J.P.Vivien, K.Zuber

Extended investigation of superdeformed bands in 151, 152Tb nuclei

NUCLEAR REACTIONS 130Te(27Al, xn), E=155 MeV; measured Eγ, Iγ, γγ-coin. 151,152Tb; deduced levels, J, π, superdeformed bands, dynamical moments, configurations; calculated single-particle energy levels. Compared with calculations and superdeformed bands in 150Tb, 152Dy.

doi: 10.1103/PhysRevC.77.014308
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2007DU07      Int.J.Mod.Phys. E16, 516 (2007)

J.Dudek, J.Dobaczewski, N.Dubray, A.Gozdz, V.Pangon, N.Schunck

Nuclei with tetrahedral symmetry

NUCLEAR STRUCTURE 154Gd; calculated single-particle level energies vs tetrahedral deformation. 156Dy; calculated potential energy surfaces. 148,150,152Sm, 150,152,154Gd; calculated energy differences between spherical and tetrahedral minima.

doi: 10.1142/S0218301307005958
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2006DU12      Phys.Rev.Lett. 97, 072501 (2006)

J.Dudek, D.Curien, N.Dubray, J.Dobaczewski, V.Pangon, P.Olbratowski, N.Schunck

Island of Rare Earth Nuclei with Tetrahedral and Octahedral Symmetries: Possible Experimental Evidence

NUCLEAR STRUCTURE 152,154,156Gd; calculated energy vs deformation; deduced possible tetrahedral and octahedral symmetries. 156Gd; analyzed levels, J, π, possible tetrahedral rotational band. Mean-field approach.

doi: 10.1103/PhysRevLett.97.072501
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2006MA15      Int.J.Mod.Phys. E15, 542 (2006)

K.Mazurek, N.Dubray, J.Dudek, N.Schunck

Exotic deformations in the actinide region

doi: 10.1142/S0218301306004491
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2005DU08      Acta Phys.Pol. B36, 975 (2005)

J.Dudek, N.Schunck, N.Dubray

Search for the nuclear hyper-deformation: motivations and new strategies


2005DU09      Acta Phys.Pol. B36, 1161 (2005)

N.Dubray, J.Dudek, A.Maj

Statistical description of the thermal shape fluctuations using realistic microscopic and macroscopic models

NUCLEAR STRUCTURE 46Ti, 216Rn; calculated γ-spectra for GDR decay. Thermal shape fluctuations, statistical approach, Lublin-Strasbourg drop model.


2005DU12      Int.J.Mod.Phys. E14, 389 (2005)

J.Dudek, N.Schunck, N.Dubray, A.Gozdz

Exotic nuclear shapes: today and tomorrow

NUCLEAR STRUCTURE 126Xe; calculated total energy vs quadrupole deformation. 78Se; calculated neutron single-particle energies vs octahedral deformation.

doi: 10.1142/S021830130500317X
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2005DU13      Int.J.Mod.Phys. E14, 493 (2005)

N.Dubray, J.Dudek, N.Schunck

The problem of universality of nuclear mean-field parametrizations

NUCLEAR STRUCTURE 40,48Ca, 56Ni, 90Zr, 100,132Sn, 146Gd, 208Pb; analyzed neutron and proton single-particle level energies; deduced mean-field parameters.

doi: 10.1142/S0218301305003326
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2005KM01      Acta Phys.Pol. B36, 1169 (2005)

M.Kmiecik, A.Maj, J.Styczen, P.Bednarczyk, M.Brekiesz, J.Grebosz, M.Lach, W.Meczynski, M.Zieblinski, K.Zuber, A.Bracco, F.Camera, G.Benzoni, B.Million, S.Leoni, O.Wieland, B.Herskind, D.Curien, N.Dubray, J.Dudek, N.Schunck, K.Mazurek

GDR feeding of the highly-deformed band in 42Ca

NUCLEAR REACTIONS 28Si(18O, X), E=105 MeV; measured Eγ, Iγ. 46Ti deduced GDR strength function. 42Ca deduced feeding of highly-deformed rotational band from GDR decay. Euroball IV and Hector arrays.


2004DU09      Eur.Phys.J. A 20, 15 (2004)

J.Dudek, K.Pomorski, N.Schunck, N.Dubray

Hyperdeformed and megadeformed nuclei: Lessons from the slow progress and emerging new strategies

doi: 10.1140/epja/i2002-10313-4
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2004KM01      Phys.Rev. C 70, 064317 (2004)

M.Kmiecik, A.Maj, B.Million, M.Brekiesz, W.Krolas, W.Meczynski, J.Styczen, M.Zieblinski, A.Bracco, F.Camera, G.Benzoni, S.Leoni, O.Wieland, S.Brambilla, B.Herskind, M.Kicinska-Habior, N.Dubray, J.Dudek, N.Schunck

Probing nuclear shapes close to the fission limit with the giant dipole resonance in 216Rn

NUCLEAR REACTIONS 198Pt(18O, X), E=96 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 216Rn deduced GDR energy, width, deformation features. Hector array, comparison with model predictions. 211,212Rn; measured γ-decays from isomeric states.

doi: 10.1103/PhysRevC.70.064317
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2004MA15      Nucl.Phys. A731, 319 (2004)

A.Maj, M.Kmiecik, A.Bracco, F.Camera, P.Bednarczyk, B.Herskind, S.Brambilla, G.Benzoni, M.Brekiesz, D.Curien, G.De Angelis, E.Farnea, J.Grebosz, M.Kicinska-Habior, S.Leoni, W.Meczynski, B.Million, D.R.Napoli, J.Nyberg, C.M.Petrache, J.Styczen, O.Wieland, M.Zieblinski, K.Zuber, N.Dubray, J.Dudek, K.Pomorski

Evidence for the Jacobi shape transition in hot 46Ti

NUCLEAR REACTIONS 28Si(18O, X), E=105 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 46Ti deduced Jacobi shape transition. Euroball IV, Hector, and Euclides arrays, thermal shape fluctuation model.

doi: 10.1016/j.nuclphysa.2003.11.043
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